Speed-regulating device.



H. ROSENBAUIVI. SPEED REGULATING DEVICE. APPLICATION FILED FEB. 9. 1917.

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'entran salaires raamrr orurron,

HELLMUTH ROSENBAUM, OF BROOKLYN, NEW YORK, ASSIGNOR T0 EMILY H. ALLEN, OF BROOKLYN, NEW YORK.

SPEED-REGULATING DEVICE.

Specification of Letters Patent.

Patented Tully 16, 121W..

To all whom it may concern:

Be it known that I, HELLMUTH ROSEN- BAUM, a citizen of Germany, and resident of the borough of Brooklyn, kcounty of Kings, and State of New York, have invented certain new and useful Improve ments in Speed-Regulating Devices, of which the following is a full, clear, and complete specication.

Devices for regulating the speed ofthe driving mechanism for talking machines need to be constructed to operate effectively when the speed, by which the record disk is to be rotated, is increased or reduced to correspond to the character of the musical compositions, songs, etc., which are to be reproduced.

With this object in view, l have devised the speed regulating mechanism shown in the accompanying drawings, wherein Figure 1 is a plan view, partly sectional view, of a speed regulating device constructed according to my invention;

Fig. 2 is a sectional view on line 2--2 and Fig. 3 a sectional view on line 33, indicated in Fig. 1;

Fig. 4; is a detail, plan view of the part on line H, indicated in Fig. 3;

Fig. 5 is a sectional view, partly elevation, similar to Fig. 3, but showing the parts of the speed regulating mechanism in the positions when the mechanism is set to operate at a lower than the normal speed.

Fig. 6 is a detail of the speed regulating mechanism.

In these drawings the numeral 7 designates a collar fixed to the shaft S, journaled in the usual way in bearings, as shown at 81, in the walls of the box of the talking machine, and whereon also the flanged sleeve 12 is mounted. This shaft S might be the shaft whereon the gear rotating the record disk (not shown in the drawings) is mounted, or an intermediate' shaft, and is operatively connected with the driving shaft of the machine by the gears 35 and 36..

The collar 11 is loosely mounted on the sleeve 12, and is connected by the flexible` springs 9 to the collar 7. A series of friction plugs 16 is arranged in the collar 11 to project against the flange 15 of the sleeve 12.y

They vary in length and are set in the flanged bores 18 in the collar 11, their flanges 17 holding them therein and also against the springs 19, set on their stems, between the flanges 17 and the plugs 21, to press them outwardly, though permitting their being pushed in under slight pressure. Their constructions, and also the manner of their setting in the collar 11, are shown in enlarged detail in Fig. 6. The frictional Contact of the plugs 16 with the flange 15 tends to reduce the speed of the shaft 8. Four. of these friction plugs 16 are shown in Fig. 2 to he set in the collar 11. The purpose of making these friction plugs un- .equally long is to effect a gradually increaslng frictional Contact between these plugs 16 and the flange 15 of the sleeve 12, whereby the effectiveness of the speed regulating device is increased.

The weights 13 are affixed to the springs 9, approximately midway between their ends. Their action on the springs 9 tends to move the collar 11 toward the ange 15 of the sleeve 12, correspondingly to the speed by which the shaft 8 is rotated. Thereby the friction plugs 16, set in the collar 11, are successively brought in contact with the flange 15, when the shaft 8 rotates at a higher speed than desired.

For the purpose of enabling this speed regulating device to operate at the variable speeds as the playing of different musical compositions, or songs, requires, the sleeve 12 is made longitudinally movable on the shaft 8, and mechanism is provided for shiftf ing it nearer to, or farther away, from the normal position of the collar 11. This mechanism is constructed as follows:

The stud 22 is set turnably in the top plate 23 of the box of the talking machine and is secured thereto by plate 241. The plate 25 is secured to the squared lower end of stud 22 by the set screw 31. The pin 27, set in the end of the link 28, engages in the eccentric slot 26 made in plate 25, as shown in Fig. 1. The otherend of link 28 is connected by screw 29 to the bracket 81, secured to the sleeve 12. The upper end of the stud 22 is formed into a knob 33, or a handle may he screwed thereon, to facilitate from, the fixed collar 7 according tothe direction in which the stud 22 is turned." The slot 26 is so eccentric relatively tothe stud 22, that by turning the stud 22 from left to right the sleeve 112 is moved towardthe fixed.

collar 7, whereby its flange is removed farther from the friction-'plugs 16,- whereas by turning the stud in the opposite direction,

i athatisfroin right to left, Athe Yflange 155 is i ybrought nearer to the collar'll, and iny close *proximity to the longest 'ofthe *friction iplugs *'16,* projecting therefrom. Consej quently, when the stud 22 is turned to the right, the plugs 16 are not brought-1in;i frictional contact with the'flange 15 until the speed, by which the shaft S is rotated, ,causes s the weights 13 to draw out the flexible springs 9 .sufficiently to move the collar 11 f the thus increased distance toward theflange 25V tothe lefttheange 15 is brought'nearerto rl`hu`s the speed regulating device is made vto maintain a uniform, faster or slower speed, at which the record disk is desired to be ro- -,tatedby .correspondingly turning thel stud 22, as explained. To facilitate the adjustmentof the speed regulating device to whata 15. And again, when the stud 22 is turned the collar 11, and the longest of theplugs 16 is brought in frictional contact with it Lalmostimni'ediately when the driving mechanism ofthetalking machine is .started.

Y `everspeed is desired, the pointer 37 isset ,onfthe' stud 22` and a graduated scale 8is Y :engravedon the plate 24C, overl which the `3'? travels,- when `thejst'ud' 22 is pointer turned.

This scale 38 may be graduated :in

any desired way, and the letters" S and F 'may be engraved on the ends of-theuscale,

as shownin F ig. 1, to indicate the direction, in which the stud 22 is tovbe turned when a 'slower or aV faster rotatingof the record Edisk is desired.

f 'I claimfasmyinvei'ition: 1.Y A speed regulating device ,for driving .mechanism :of talking machines, comprising a shaftl operatively connected with the 'driv-` ingmechanism; a collar fixed tol thes'haft.; Y a flangedlsleeve, on the shaft and longitudirnallya, movable thereon;4 a collar, loosely .mounted on the-,sleeve and longitudinally movable thereon; y set in the movable collar iii-positiony to engage .the-flangelofV the sleeve; flexible links v connecting the fixed and the-movable collar; weights securedl to the' links approximately friction plugs yieldingly f kmidway between their ends, and means for f shifting the sleeve ion the shaft; substan- 3tially as hereinlshown and described.

2.' A speed regulating device fordriving mechanism of talking machines, compris- `ing a .shaft-operatively connected with the idrivingn-mechanism;, a-collan fixed-to the shaft ,u a iianged sleeve on the shaft and e longitudinally movable thereon;A a collar, yloosely mounted on the' sleeve and longitudina'lly'movable thereon; friction plugs of different-lengths set yieldingly in the movable collar in position to engage the flange ofathesleeve; flexible links connecting the fixed and the movable collar;l weights sefcuifed -to^l the-Elinks approximately midway between their ends, and means Afor shift- Y ing the sleeve on-tlie-sli`aftg substantially: as herein-shown-and described.

3.1 A `speedfrcigulafting devicefor `driving mechanism ofV talking --machinesy comprising a shaftoperativelyconnected with the driv- Ving mechanism a--collar I"fixeditol-thewsliaft;

a flangedv sleeveJ ontheifsh'af-ti and 4longitudinallymov-able lthereon a fi collar, 1 iloosely mounted on the sleeve and-fllongitiidinally -moifablef'thereon='friction plugsffsetvin the j-'movable @collar f in .i position -to 1 engage fthe i 'flange of the sleeve; flexible Ilinks connecting 'the-fixed and the--movablef-collar;f weights securedr tol fthe links approximately midway nally movable thereon;l a-f:collar, floosely mounted on'i the 'sleeve and# Ilongitudinally movable Ithereon frictionv plugsseti inl-the l`movable '-collai in Vposition-Lto engage the I* flange" ofthe sleeve g'fflexible links connecting the fixedsand the-movable Jcollar g weights wsecured'v to the y*links approximately Vmidway between their len-ds; va stud fturnablymounted 1 inthe 'top fplate fof Ithe-talking machine; an eccentrically slotted plate, secured to i the stud; af link -having oneendseeur'edto the sleeve-sx and alpine-engaging in the eccentric `slot-ofi the fplate,^set -in the other end, and means'l for 4turning'L the* stud; substantially as herein shown *andi-described.

5i"` A` speed regulating device' lfori driving mechanism-'of talking machines, comprising z a shaft, operatively connected `with lthe fd'riving mechanism; acollar xed to ztlieshaft; a' flanged@ sleevefon; the shaft and longitudi-` "nally movable. thereon; a -collar,f=loosely mounted? on'f the sleeve land' longitudinally l'movablef thereon friction plugs:l set` -in the movablecollar in-position to -engagefthe ange-o-fthe sleeve'gliiiexible links `connecting i the fixed -ahd i Ather:movableeollar ;ffw eights Aflanged sleeve on' the shaft liandlongitudil "between their ends; aV studturnablymounted secured to the links approximately midway connecting the stud with the movable sleeve, between their ends; a stud turnably mounted for moving the sleeve by turning the stud; in the top plate of the talking machine; a substantially as herein shown and described. 10

pointer on the stud; a graduated scale on HELLMUTH ROSENBAUM. the top plate of the talking machine, in posi- Witnesses:

tion to be traversed by the pointer When PAULA BATES,

the stud is turned, and means, operatively Lomsn KOLLER.

Copies of this patent may he obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

